DataAnnotations “NotRequired” attribute

Question

I\'ve a model kind of complicated.

I have my UserViewModel which has several properties and two of them are HomePhone and WorkPhone

Answer 1

Just some observation: the following code couse a problem if the binding is more than simple filed. I you have a case that in object have nested object it going to skip it and caouse that some filed not been binded in nested object.

Possible solution is

protected override void BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor)
     {
         if (!propertyDescriptor.Attributes.OfType().Any())
         {
             var form = controllerContext.HttpContext.Request.Form;

             if (form.AllKeys.Where(k => k.StartsWith(string.Format(propertyDescriptor.Name, "."))).Count() > 0)
             {
                 if (form.AllKeys.Where(k => k.StartsWith(string.Format(propertyDescriptor.Name, "."))).All(
                         k => string.IsNullOrWhiteSpace(form[k])))
                     return;
             }
         }

         base.BindProperty(controllerContext, bindingContext, propertyDescriptor);
     }

much thanks to Altaf Khatri